Prohibition

I think many kids, myself included, who grew up in '80s and '90s first learned about prohibition from the episode "Homer vs. the Eighteenth Amendment." The episode included a lot of real elements from prohibition including speak-easies and bootlegging and a few not-so-real ones: the punishment for breaking prohibition laws being "death by catapult" and a little-known amendment to the constitution that "requires ducks to wear long pants."

A corrupt Chief Wiggum trying to smooth things over with a bit of the "ol' Wiggum charm."

It also ends with an infamous Simpsons line: "Alcohol: the cause of, and solution to, all of life's problems."